Prostrin 5mg Tablet

Reviewed By Dr. Rajeev Sharma, MBA, MBBS

Last updated on 19 Dec 2025 | 12:56 PM (IST)

Prostrin 5mg Tablet is used to treat high blood pressure by relaxing blood vessels, allowing blood to flow more easily. It is also used to treat symptoms of an enlarged prostate gland (benign prostatic hyperplasia) in men by relaxing the muscles in the prostate and bladder neck, making it easier to urinate.

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General Information

Contains

Terazosin (5mg)

Marketer

Lap Farmacia Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Prostrin 5mg Tablet may be prescribed alone or in combination with other medicines. It can be taken with or without food. The dose will depend on your condition and how you respond to the medicine. Follow the advice of your doctor on what is right for you. You need to use this medicine regularly to get the most benefit from it, so keep taking it even if you feel well. High blood pressure does not usually have symptoms. If you stop taking it, your blood pressure may rise and put you at risk of a heart attack or stroke.

Common side effects of Prostrin 5mg Tablet include dizziness, drowsiness, puffy feet or hands, and nasal congestion. Most side effects disappear when you get used to the medicine. If side effects persist or worsen, talk to your doctor.

To avoid feeling dizzy, get up slowly after sitting or lying down. It may also cause your blood pressure to go too low. Some side effects may be serious and need urgent medical attention. Your doctor may be able to help with ways of preventing or reducing side effects. If you are pregnant, thinking about becoming pregnant, or breastfeeding, ask your doctor before using Prostrin 5mg Tablet. Also, talk to your doctor before taking it if you have heart failure, liver disease, or kidney disease and if you are having eye surgery for a cataract. Your blood pressure will need to be checked regularly while using this medicine.

Uses of Prostrin Tablet

Hypertension (high blood pressure)

Benefits of Prostrin Tablet

Hypertension (high blood pressure)
Prostrin 5mg Tablet helps lower high blood pressure by relaxing and widening blood vessels, allowing blood to flow more easily. Reducing blood pressure decreases the risk of serious complications such as heart attacks, strokes, and kidney disease. When taken in the right dose and duration as prescribed, it improves circulation, reduces strain on the heart, and supports overall cardiovascular health.

Side effects of Prostrin Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Prostrin

Dizziness
Drowsiness
Low energy
Weakness
Swelling of hands
Swelling of legs
Nasal congestion (stuffy nose)

How to use Prostrin Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Prostrin 5mg Tablet may be taken with or without food.

How Prostrin Tablet works

Prostrin 5mg Tablet is an alpha-blocker. It lowers blood pressure by relaxing blood vessels. It also relaxes the muscles around the bladder exit and prostate, making urinating easier.

Quick tips

Prostrin 5mg Tablet may cause a sudden drop in your blood pressure, especially when you first start taking this medicine. To reduce the risk of dizziness or fainting, stand up slowly after sitting or lying down.
Avoid consuming alcohol while taking Prostrin 5mg Tablet, as it can lower your blood pressure even more and make you feel more dizzy.
Be cautious while driving or doing anything that requires concentration, as it can cause dizziness and sleepiness.
Inform your doctor that you are taking Prostrin 5mg Tablet if you are scheduled for a cataract surgery.

Safety advice

Alcohol

UNSAFE

It is unsafe to consume alcohol with Prostrin 5mg Tablet

Pregnancy

CONSULT YOUR DOCTOR

The safety of Prostrin 5mg Tablet during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.

Breast feeding

CONSULT YOUR DOCTOR

Prostrin 5mg Tablet may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.

Driving

UNSAFE

Prostrin 5mg Tablet may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

SAFE IF PRESCRIBED

Prostrin 5mg Tablet is safe to use in patients with kidney disease. No dose adjustment is recommended.

Liver

CAUTION

Prostrin 5mg Tablet should be used with caution in patients with liver disease. Dose adjustment may be needed.
Use of Prostrin 5mg Tablet is not recommended in patients with severe liver disease.

Interaction with drugs

Taking Prostrin with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Moderate

Sildenafil (Oral Route)

If concurrent use is essential, your doctor may monitor your treatment and adjust the doses as per the observations. It is recommended to lie down if you experience symptoms such as headache, fatigue, sweating or dizziness until they fade away and consult your doctor.

Moderate

Dapoxetine (Oral Route)

Monitor your blood pressure regularly and talk to your doctor if you notice any unusual symptoms. Your doctor may adjust the dose if required.

Moderate

Baclofen (Oral Route)

If concurrent use is essential, watch out for symptoms such as dizziness, fainting, blurred vision, nausea, fatigue, confusion, cold or clammy skin, shallow breathing or rapid pulse and consult your doctor if you experience them. They may adjust the doses as per the observations.

Moderate

Tadalafil (Oral Route)

Moderate

Bortezomib (Injection Route)

Your doctor may monitor blood pressure and adjust the dose, if required.

Frequently asked questions

What is Prostrin 5mg Tablet used for?

Prostrin 5mg Tablet is used to treat high blood pressure (hypertension) and relieve symptoms of an enlarged prostate (BPH) such as difficulty urinating or a weak urine stream. It helps by relaxing blood vessels and the muscles in the prostate and bladder.

What should I discuss with my doctor before taking Prostrin 5mg Tablet?

You should inform your doctor if you have liver, kidney, or heart problems, have had eye surgery (especially cataracts), take medications for erectile dysfunction, high blood pressure, or chest pain, and/or are pregnant, planning pregnancy, or breastfeeding.

Who should avoid taking Prostrin 5mg Tablet?

Individuals should not take Prostrin 5mg Tablet if they are allergic to terazosin or any other ingredients peresent in Prostrin 5mg Tablet, have a history of fainting when urinating (micturition syncope), and have low blood pressure or conditions where sudden drops in blood pressure are dangerous.

What serious side effects of Prostrin 5mg Tablet should I watch out for?

You should seek medical attention if you experience serious side effects of Prostrin 5mg Tablet such as fainting or feeling like you might pass out, fast heartbeat or palpitations, painful long-lasting erections (priapism), severe allergic reactions (swelling of lips, face, or throat), and blurry vision during cataract surgery.

Why do I need to be cautious when taking the first dose of Prostrin 5mg Tablet?

The first dose of Prostrin 5mg Tablet (or when resuming after a break) can cause a sudden drop in blood pressure, leading to fainting and dizziness. That's why it should be taken at bedtime and with caution.

When should I take Prostrin 5mg Tablet?

Take Prostrin 5mg Tablet at bedtime (especially when starting treatment) to minimize dizziness from first-dose effects. After adjusting, your doctor may switch you to morning dosing.

Can I stop taking Prostrin 5mg Tablet suddenly?

No, do not stop taking Prostrin 5mg Tablet suddenly. Your doctor may gradually reduce the dose under medical supervision. Stopping it abruptly can cause a sudden rise in blood pressure and worsen symptoms of BPH (benign prostatic hyperplasia).

What precautions should I take during Prostrin 5mg Tablet treatment?

During Prostrin 5mg Tablet treatment, you should rise slowly from sitting/lying to prevent dizziness, avoid alcohol (increases dizziness risk), and inform surgeons/dentists before any procedures (risk of low blood pressure).

Fact Box

Chemical Class

N- arylpiperazines

Habit Forming

Therapeutic Class

CARDIAC

Action Class

Selective Alpha-1 Adrenergic Receptor Antagonists

Related lab tests

Kidney Function Test

References

Westfall TC, WestfallIn DP. Adrenergic Agonists and Antagonists. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. 12th ed. New York, New York: McGraw-Hill Medical; 2011. p. 307.
Robertson D, Biaggioni I. Adrenoreceptor Antagonists Drugs. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. p. 153.
Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 1328-29.
Terazosin [Prescribing Information]. North Chicago, Illinois: Abbott Laboratories; 2009. [Accessed 04 Apr. 2019] (online). Available from:
Central Drugs Standard Control Organisation (CDSCO). [Accessed 04 Apr. 2019] (online) Available from:
Terazosin hydrochloride [Drug Label]. North Chicago, IL: Abbott Laboratories; 2009. [Accessed 25 Jul. 2024] (online) Available from:
Terazosin [Prescribing Information]. Baudette, MN: ANI Pharmaceuticals, Inc.; 2024. [Accessed 21 Apr. 2025] (online). Available from:

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Lap Farmacia Ltd
Address: B-17, 1st Floor, B Block, Community Centre, Janakpuri, New Delhi 110058.

Vendor Details

Country of origin: India

Lab tests offered by us

Why we need a prescription?

Provide right medicines

Prescriptions are complex documents. We proof read and recheck at various steps to provide you the right medication in the correct form and dose

In accordance with the law

Most medicines cannot be sold without a valid prescription, as per the Drugs and Cosmetics Act, 1940 and Rules, 1945

Prostrin 5mg Tablet

Save more with additional offers

Save more with additional offers

General Information

Contains

Marketer

Storage

Product introduction

Uses of Prostrin Tablet

Benefits of Prostrin Tablet

Side effects of Prostrin Tablet

How to use Prostrin Tablet

How Prostrin Tablet works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Sildenafil (Oral Route)

Dapoxetine (Oral Route)

Baclofen (Oral Route)

Tadalafil (Oral Route)

Bortezomib (Injection Route)

Frequently asked questions

What is Prostrin 5mg Tablet used for?

What should I discuss with my doctor before taking Prostrin 5mg Tablet?

Who should avoid taking Prostrin 5mg Tablet?

What serious side effects of Prostrin 5mg Tablet should I watch out for?

Why do I need to be cautious when taking the first dose of Prostrin 5mg Tablet?

When should I take Prostrin 5mg Tablet?

Can I stop taking Prostrin 5mg Tablet suddenly?

What precautions should I take during Prostrin 5mg Tablet treatment?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Kidney Function Test

References

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

Related/Popular tests